Note 8 - Non-vested Stock Options Activity (Details) - Non-vested Stock Options [Member]	12 Months Ended
	Jun. 30, 2016 $ / shares shares
Outstanding at, (in shares) | shares	89,198
Outstanding at June 30, 2015 (in dollars per share) | $ / shares	$ 13.07
Granted (in shares) | shares	55,875
Granted (in dollars per share) | $ / shares	$ 5.75
Vested (in shares) | shares	(53,496)
Vested (in dollars per share) | $ / shares	$ 9.79
Forfeited/cancelled (in shares) | shares	(48,470)
Forfeited (in dollars per share) | $ / shares	$ 13.35
Outstanding at, (in shares) | shares	43,107
Outstanding at June 30, 2016 (in dollars per share) | $ / shares	$ 7.66